Leaning out a 260

[yuioutta]

Anybody have an idea of where to start the fuel adjustment on a 96 Merc 260 running at about 3400 ft above sea level?? Any suggestions would be greatly appreciated. Thanks, Shawn

[chad202]

what is your fuel set at now. 99-100 is good for me at sea level so you would be lower than that.

[yuioutta]

Not sure where it is set at now. I have access to a ddt but nobody in this town has the right cables to hook up to my ecu. There is only 1 other guy here who has a 260 and he went with the lean it out until it runs good method. I am reading about 1000 degrees on my pyrometer at wot but this thing really loads up at idle. Thanks, Shawn

[chad202]

If your pyro is right. lean it up. run full throttle for around 15seconds then pull kill switch. pull plugs and check them. light brown is perfect.

[--mirage1--]

+1 read the plugs